itkNeighborhoodAccessorFunctor.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkNeighborhoodAccessorFunctor_h
#define __itkNeighborhoodAccessorFunctor_h

#include "itkImageBoundaryCondition.h"
#include "itkImageBase.h"

namespace itk
{
template< typename TImage >
class NeighborhoodAccessorFunctor
{
public:
  typedef NeighborhoodAccessorFunctor           Self;
  typedef TImage                                ImageType;
  typedef typename ImageType::PixelType         PixelType;
  typedef typename ImageType::InternalPixelType InternalPixelType;
  typedef unsigned int                          VectorLengthType;
  typedef typename ImageType::OffsetType        OffsetType;

  itkStaticConstMacro(ImageDimension, unsigned int, TImage::ImageDimension);
  typedef Neighborhood< InternalPixelType *, Self::ImageDimension > NeighborhoodType;

  typedef ImageBoundaryCondition< ImageType > const *
  ImageBoundaryConditionConstPointerType;

  inline void SetBegin(const InternalPixelType *) {}

  inline PixelType Get(const InternalPixelType *pixelPointer) const
  {
    return ( *pixelPointer );
  }

  inline void Set(InternalPixelType * & pixelPointer, const PixelType & p) const
  {
    *pixelPointer = p;
  }

  inline PixelType BoundaryCondition(
    const OffsetType & point_index,
    const OffsetType & boundary_offset,
    const NeighborhoodType *data,
    const ImageBoundaryConditionConstPointerType boundaryCondition) const
  {
    return boundaryCondition->operator()(point_index, boundary_offset, data);
  }

  void SetVectorLength(VectorLengthType) {}
  VectorLengthType SetVectorLength() { return 0; }

  NeighborhoodAccessorFunctor() {}

  virtual ~NeighborhoodAccessorFunctor() {}
};
} // end namespace itk

//template< typename TImage > const unsigned int
// itk::NeighborhoodAccessorFunctor<TImage>::ImageDimension;

#endif